Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Domain walls in nanowires cleverly set in motion: Important prerequisite for the development of nano-components for data storage and sensor technology / Publication in Nature Communications

Ill.: Kläui-Lab, Institute of Physics
Illustration of synchronous displacement of several domain walls over larger distances by means of customized perpendicular field pulses
Ill.: Kläui-Lab, Institute of Physics

Illustration of synchronous displacement of several domain walls over larger distances by means of customized perpendicular field pulses

Abstract:
Researchers at Johannes Gutenberg University Mainz (JGU) have achieved a major breakthrough in the development of methods of information processing in nanomagnets. Using a new trick, they have been able to induce synchronous motion of the domain walls in a ferromagnetic nanowire. This involved applying a pulsed magnetic field that was perpendicular to the plane of the domain walls. "This is a radically new solution," explained Professor Mathias Kläui of the Institute of Physics of Johannes Gutenberg University Mainz. "It enables us to move domain walls synchronously over a relatively large distance without them returning to their original position." This is essential for permanent data storage, because data would otherwise be lost if domain walls were not collectively displaced in a controlled manner. The research was carried out in cooperation with the working groups of Professor Stefan Eisebitt at TU Berlin and Professor Gisela Schütz of the Max Planck Institute for Intelligent Systems in Stuttgart. The results were published in the journal Nature Communications at the end of March.

Domain walls in nanowires cleverly set in motion: Important prerequisite for the development of nano-components for data storage and sensor technology / Publication in Nature Communications

Mainz, Germany | Posted on April 8th, 2014

Magnetic nanowires have small regions of uniform magnetization called domains, which can be used as storage units (bits). The site where domains of different alignment meet each other is called a domain wall. Information can be stored in the domain, and read and processed by means of the movement of the domain walls. The method has the great advantage that the information - as in the case of magnetic data storage in general - cannot be easily lost. This contrasts with semiconductor-based storage systems, such as RAM in PCs, which lose all stored information without power. In addition, no fragile moving parts are required such as the read/write head of a hard disk.

It has not previously proved possible to induce the required controlled and synchronized movement of multiple domain walls using magnetic fields. The most obvious approach would be to apply a magnetic field in the direction in which the magnetization runs in the tiny nanowires. However, this has been shown to be ineffective, as there is loss of data. Mathias Kläui and his group took a radically new path. They decided to apply a pulsed magnetic field perpendicularly to the in-plane magnetized domain walls. As the Mainz researchers found in their model system, it is possible to customize the asymmetric field pulses that provide the forward- and backward-oriented forces that act on domain walls. Data can thus be moved within the storage medium in a controlled manner.

The participating physicists at Mainz University first tried out their concept in the context of micromagnetic simulations and then tested it experimentally. For this purpose, they recorded images of the magnetic arrangement in the tiny nanowires with the help of the electron storage ring BESSY II of the Helmholtz Center Berlin for Materials and Energy (HZB). As expected from the simulation, they observed displacement of the domain walls in a direction that was consistent with the model. The scientists also calculated the energy that would be necessary for the experimentally observed domain wall motion and came to the conclusion that the energy consumption of the proposed system would be quite cost-effective compared with the best components currently available.

"The results are very promising. We assume that the necessary paradigm shift will be facilitated by this new approach and it will prove possible to develop a method of efficient and controlled synchronous motion of the domain walls in nanowires," said Kläui. This would pave the way for the development of non-volatile spintronic components of the next generation, which could be used in a wide range of applications for data storage as well as logic and sensor modules.

####

For more information, please click here

Contacts:
Dr. Mathias Kläui

49-613-139-23633
Fax +49 6131 39-24076

Copyright © Johannes Gutenberg Universitaet Mainz

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related Links

Publication

Related News Press

News and information

GLOBALFOUNDRIES and Soitec Enter Into Long-term Supply Agreement on FD-SOI Wafers: Strategic milestone to help guarantee a secure, high-volume supply of FD-SOI technology September 20th, 2017

GLOBALFOUNDRIES Announces Availability of mmWave and RF/Analog on Leading FDX™ FD-SOI Technology Platform: Technology solution delivers ‘connected intelligence’ to next generation high-volume wireless and IoT applications with lower power and significantly reduced cost September 20th, 2017

GLOBALFOUNDRIES Announces Availability of Embedded MRAM on Leading 22FDX® FD-SOI Platform: Advanced embedded non-volatile memory solution delivers ‘connected intelligence’ by expanding SoC capabilities on the 22nm process node September 20th, 2017

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Chip Technology

GLOBALFOUNDRIES Announces Availability of Embedded MRAM on Leading 22FDX® FD-SOI Platform: Advanced embedded non-volatile memory solution delivers ‘connected intelligence’ by expanding SoC capabilities on the 22nm process node September 20th, 2017

GLOBALFOUNDRIES Delivers 8SW RF SOI Technology for Next-Generation Mobile and 5G Applications: Advanced 8SW 300mm SOI technology enables cost-effective, high-performance RF front-end modules for 4G LTE mobile and sub-6GHz 5G applications September 20th, 2017

GLOBALFOUNDRIES Unveils Vision and Roadmap for Next-Generation 5G Applications: Technology platforms are uniquely positioned to enable a new era of ‘connected intelligence’ with the transition to 5G September 20th, 2017

GLOBALFOUNDRIES Delivers Custom 14nm FinFET Technology for IBM Systems: Jointly developed 14HP process is world’s only technology that leverages both FinFET and SOI September 20th, 2017

Memory Technology

First on-chip nanoscale optical quantum memory developed: Smallest-yet optical quantum memory device is a storage medium for optical quantum networks with the potential to be scaled up for commercial use September 11th, 2017

High-speed quantum memory for photons September 9th, 2017

Fast magnetic writing of data September 7th, 2017

Bit data goes anti-skyrmions September 1st, 2017

Sensors

Leti Develops Proof of Concept to Test Wireless Systems in Aircraft: Will Present Results of Joint Project at AeroTech Conference And Exhibition in Fort Worth, Texas, Sept. 26-28 September 20th, 2017

Research shows how DNA molecules cross nanopores: Study could inform biosensors, manufacturing, and more September 5th, 2017

Leti and Partners in PiezoMAT Project Develop New Fingerprint Technology for Highly Reliable Security and ID Applications: Ultra-high Resolution Pressure Sensing Uses Matrices of Vertical Piezoelectric Nanowire To Reconstruct the Smallest Features of Human Fingerprints September 5th, 2017

New results reveal high tunability of 2-D material: Berkeley Lab-led team also provides most precise band gap measurement yet for hotly studied monolayer moly sulfide August 26th, 2017

Discoveries

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017

Announcements

GLOBALFOUNDRIES Delivers 8SW RF SOI Technology for Next-Generation Mobile and 5G Applications: Advanced 8SW 300mm SOI technology enables cost-effective, high-performance RF front-end modules for 4G LTE mobile and sub-6GHz 5G applications September 20th, 2017

GLOBALFOUNDRIES Unveils Vision and Roadmap for Next-Generation 5G Applications: Technology platforms are uniquely positioned to enable a new era of ‘connected intelligence’ with the transition to 5G September 20th, 2017

GLOBALFOUNDRIES Delivers Custom 14nm FinFET Technology for IBM Systems: Jointly developed 14HP process is world’s only technology that leverages both FinFET and SOI September 20th, 2017

GLOBALFOUNDRIES Introduces New 12nm FinFET Technology for High-Performance Applications September 20th, 2017

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers

Copper catalyst yields high efficiency CO2-to-fuels conversion: Berkeley Lab scientists discover critical role of nanoparticle transformation September 20th, 2017

Solar-to-fuel system recycles CO2 to make ethanol and ethylene: Berkeley Lab advance is first demonstration of efficient, light-powered production of fuel via artificial photosynthesis September 19th, 2017

A new approach to ultrafast light pulses: Unusual fluorescent materials could be used for rapid light-based communications systems September 19th, 2017

New quantum phenomena in graphene superlattices September 18th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project